????:1???????????:??????????

2?????

3??????????

4??????V

5????????????

???????????:?????,????,????????????????,???

????75??????????,???????“???????”??????,???????;??????????,1?????;??????,????????,???,????????70????????????????;????????????????????,???“?????”?????????????????,?????

???,???,???,???????????????????????;????????,???,????????;?????,?????;????,????????????????“?????????????”????????,?????5????,????????????,?????;?????????,?????????????????????,?????

???????? ?????

??????,?????,????????,?????????????????,??????

?????????????????:?????????????

??????????????,?????????????????,??????????????,???“??????”??,??????????????“????”?

????????:?? ?????

?????????,????????????,?????,?????LED???,??????“??????????”??????????????????

?????????????????:???????? ??????

??????????,??????????????????????????,?????????????,??????????

????????????? ????????????

????,????????,??????“???????????”,???????????????????,??????????????????????????????????,??????????????,????? ????????????????????:?????